On the Variation of Oxygen and Alminium in Molten Steel during Pouring Practice T. Obinata et, alii. Spoon position: (A): within 100mm under nozzle (B): 1000mm Fig. 1. Influence of the sampling methods on oxygen contents in molten steel under the ladle. Fig. 2. Influence of the sampling methods on acid soluble Al and insoluble Al contents in molten steel under the ladle.
Fig. 3. Variation of oxygen in molten steel during pouring practice. Study on the Oxidizing Power of Steelmaking Slags(I) (Activity of FeO in FeO-SiO2(sat.)and FeO-CaO(sat.)Slags) S. Watanabe, et alius.
Fig. 2. Relationship between activity of ferrous oxide in silica saturated iron oxide slag and teuwerature.
Fig. 3. Relationship between activity of the ferrous oxide in lime saturated iron oxide slag and temperature. 4) N. A. Gokcen, J. Chipman: Trans. Am. Inst. Min. Met. Eng., 194(1952), 171 5) H. Schenck, G. Wiesner: Archiv Eisenhuttenwes., 27(1956), 1 6) R. J. Schuhmann, P. J. Ensio: Trans. Am. Inst. Min. Met. Eng., 191(1951), 401 1) M. N. Dastur, J. Chipman: Trans. Am. Inst. Min. Met. Eng., 185, (1949), 441 2) C. R. Taylor, J. Chipman: Trans. Am. Inst. Min. Met. Eng., 154(1943), 228 3) W. A. Fischer, H. Vom Ende: Archiv. Eisenhuttenwes., 23(1952), 21
1) 2) D. C. Hilty: Proceedings of Electric Furnace Steel Conference(1949)p. 246, 3) B. V. Linchevskii, A. M. Sarnarin: Izvest. Akad. Nauk SSR, Otdel. Tekh. Nauk, (1953)No.5, 691 On the Desulphurization of Molten Steel by CaC2 and CaO K. Shimanaka, et alius. Fig. 2. Relation between reduced Cr and oxidized Cr.
Rate of desulphurization by CaC2 and CaO at 1600 Ž(Al Deoxidation)
Some Experimental Study on the Attenuation of Ultrasonic Waves in Forged Steel. T. Noda, et alii. Fig. 1. Relation between attenuation of ultrasonic waves, impact resistance and forging ratio.
Fig. 2. Relation between grain size and number of echo. (frequency 5M C) Fig. 3. Relation between attenuation of ultrasonic waves, impact resistance and heat treatment.
Fig. 1. Apparatus Fig. 2. Relation between pressure loss and rate of discharge
Table 1. Chemical composition of samples(%) Fig. 1. The peening effect on mild steel sheet by liquid honing
Fig. 1. Relation between chromium content and mechanical properties. Fig. 3. Relation between C content and heating time of 2% Cr-Mn Fig. 2. Relation between No. of hammering, reduction ratio and hardness.
Tabla 1. Chemical composition of the specimen tested. Fig. 1. Relation between grain size and cooling speed. Fig. 2. Relation between grain thickness of mould. size and
Table 3. Relation between number of grain and heating time. Table 4. Effect of grain size on the mechanical properties.
Tabie 1. Chemical composition of specimens Fig. 1 Effects of Mn on the distorsion of Cr-Mo case-hardening steel. Fig. 2. Relations between Mn content and quenched Brinnel hardness of carburized case.
Table 1. Chemical composition of specimens Table 2. Distortion caused by heat treatment(%)
Table 3. Mechanical properties of Specimen No 1.
Fig. 1. Relation between internal cracks and Mn, S. Fig. 2. Relation between internal cracks and internal sand marks, and black, spots. -181-
Fig. 1. Effect of Sn on properties. Fig. 2. Decrease of Erichsen value by minor elements.
Photo 1. Microstructures of the local hardened wire rod etch: 2% HNO3 alcohl solution Table 1. Chemical composition
Photo 2. Microstructures of the cold drawing wire rod after heat treatmets etch: 2% HNO3 alcohol solution
Fig. 1. Correlation of elongation to hydrogen content Fig. 3. Correlation of percent elongation to mean strain rate Fig. 2. Change of hydrogen and ductility on aging
Table 1. Properties of the samples Oxygen contained; by vacuum fusion method Grain size No.; by vacuum heating method Table 2. Weight increase by oxidation of the samples which were heated at 1200 Ž
Fig. 1. The difference of weight increase by heating between the samples of various Al-additions
Table 1. Chemical composition of the specimens tested.
Fig. 1. Magnetic torque curve for disk of sample A. Fig. 2. Change of torque curve resulting from annealing, time at 950 Ž
Fig. 1. Cooling velocity by high and low quenching oil temperature. Fig. 2. Mechanical properties. Fig. 3. Mechanical properties at various quenching time.